Cisco Cisco Expressway
Enable Calls to Microsoft Environment
Command or Action
Purpose
Prepare the Gateway Expressway to work in your
environment: configure DNS and NTP, and enter a cluster
name
environment: configure DNS and NTP, and enter a cluster
name
To route calls destined for Microsoft domains towards the
Gateway Expressway
Gateway Expressway
Secure the trunk to the Unified CM to enable encrypted media
between Unified CM registered endpoints and Microsoft
clients
between Unified CM registered endpoints and Microsoft
clients
Enable SIP TLS, trust the Gateway Expressway, and configure
media encryption
media encryption
To route calls destined for Microsoft domains towards the
internal Microsoft environment
internal Microsoft environment
To verify this part of the configuration.
Table 4 Overview of Tasks Required to Enable Calls from Collaboration Endpoints to Microsoft Clients (All
Internal)
Internal)
Configure the Gateway Expressway
Command or Action
Purpose
So that the Gateway Expressway can resolve trusted Microsoft
Servers (B2BUA hosts)
Servers (B2BUA hosts)
So that Microsoft Server static routes can resolve the Gateway
Expresswaycluster
Expresswaycluster
To synchronize the Gateway Expressway with the Microsoft Server
environment
environment
Table 5 Prepare the Gateway Expressway for the Network
Task 1: Configure DNS and Local Hostname
Configure the DNS Server Details
If possible, you should configure the Gateway Expressway peers to use the same DNS servers used by the FE Servers.
On a Microsoft Server:
1.
From the Windows Start menu choose Run.
2.
Type
cmd
into the Open field and click OK. A command window opens.
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Cisco Expressway with Microsoft Infrastructure Deployment Guide
Configuration